Duration of the third internship of Ruben Engelander1919-01-07/..1919-01-07/..Duration of the second internship of Hartog HaringmanDuration of the second internship of Karel Antoon Bernard KatDuration of the second internship of David Beem1919-01-07/..1919-01-07/..1919-01-07/..1919-01-07/1923-03-171919-01-07/..1919-01-07/..
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1919-01-07
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1919-01-07